I hate this crap and wish people would stop doing it. It makes my brain bleed and doesn't prevent any difficult to find bugs.

if (TERMINAL_COUNT <= index_thing)

English doesn't work that way, and I don't know about you but this crap is just awkward as hell. Sweet Jesus I wish there was less cargo cult programming in the world. Just because you saw something in a blog that convinced you that reverse comparisons is best doesn't mean it actually is. Use a damn static analysis tool to catch accidental assignments in expressions, don't twist my brain to interpret your weird phrasing of comparison operators. Some of your code reviewers may be dyslexic and have enough problems as it is.

And now for the mini-rant that I'm actually here for: You know what makes for difficult to find bugs? (Hint: It sure as hell isn't an assignment in an expression) Releasing an RTEMS semaphore you've never obtained. You'd think that would cause some kind of panic or assert failure but nope. Instead it causes... misaligned address exceptions? In statically allocated global memory? WTF??